Search results
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Report on seabird by-catch outside the CCAMLR Convention Area recorded in the South African fisheries
Abstract: Given Resolution 22/XXV, paragraph 3 concerning the mortality of Convention Area ... Seabirds to the north of the Convention Area and the request by IMAF, SC-CAMLR XXVII/15 (Para 4.3) to ... report these, this document provides an overview of the South African fishing sectors most likely to ... impact on these seabirds. A summary is provided of the recorded number of mortalities for each fishery ...
Meeting Document : WG-IMAF-11/11 : Author(s): C. Heineken and P. Mullins (South Africa)
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Krill stock evaluation with data from commercial fishing vessels
. The use of such vessels as platforms for survey transects under scientific supervision has already ... been demonstrated. Here we show that acoustic data of good quality can be collected by observers on ... ‘Saga Sea’ in 2011 as example. A one-month subset of the acoustic data from February/March was processed ... within a time-frame of a week and linked to krill length data from the same period. The data from the ...
Meeting Document : WG-EMM-12/63 : Author(s): G. Skaret (Norway), J. Moir Clark (United Kingdom), O.R. Godø, R.J. Korneliussen, T. Knutsen, B.A. Krafft and S.A. Iversen
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Research plan for the exploratory fisheries for Dissostichus spp. in Division 58.4.3a in 2014/15
the latest CCAMLR C2 and observer data toward the development of research plan for the 2014/15 ... exploratory fishery of Dissostichus eleginoides in Division 58.4.3a. The stock size for block 5843a_1 was ... experiment and appropriate reference area (north of Subarea 48.4) for the CPUE method recommended at the last ... CPUE method. Predicted number of tag recaptures from the estimated stock sizes using the Petersen ...
Meeting Document : WG-SAM-14/04 : Author(s): Delegation of Japan
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Seamount-specific biomass estimates from SSRU 88.2H in the Amundsen Sea derived from mark-recapture data
on almost every seamount in every year and usually in proportion to the level of tagging on the ... in recapture rates of annual cohorts of tagged fish through time in SSRU 88.2H indicates a decrease ... in the percentage of the population tagged due to the annual immigration of untagged fish, along with ... catch and emigration of tagged and untagged fish resulting in a decreasing trend in biomass overall ...
Meeting Document : WG-FSA-14/58 : Author(s): S.J. Parker and S. Mormede (New Zealand)
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Soviet krill fishery in 1977–1992, Part 1. Distribution, fishing effort, interannual situation patterns
types of FE distribution in subsequent groups of years: Type I: 1981 and 1982, partly 1979/1980: FE was ... : FE was developed mostly in subarea 48.2, since 1985 the role of 48.3 is increasing. Type III: 1987 ... discussed several groups of factors influencing FE distribution, it is very difficult to determine the key ... one between them. However, it was revealed that the determined types of FE distribution well ...
Meeting Document : WG-EMM-01/57 : Author(s): F.F. Litvinov, V.A. Sushin, G.A. Chernega and O.A. Berezhinskiy (Russia)
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Foraging trip duration in male and female macaroni penguins at Bouvetøya
recommend using only males. However, males attend the chicks at the nest during most of the brooding period ... -transmitters in the middle of the brooding period (chick age 12-18 days) and 17 females instrumented at the ... start of the creching period (chick age 25-30 days). Males made their first foraging trips at the start ... of the creching period. The first trip usually lasted several nights, whereas the subsequent trips ...
Meeting Document : WG-EMM-98/28 : Author(s): F. Mehlum, K. Isaksen and V. Bakken (Norway)
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THE ROSS SEA AS A UNIQUE EVOLUTIONARY SITE
Abstract: The case is made that the Ross Sea is an evolutionary site on par with those of the ... Antarctic marine groups. The Ross Sea fish fauna includes 95 species of fishes, dominated by 61 species of ... notothenioids, an endemic perch-like group. Relative to fish fauna in warmer regions, the nature of the Ross Sea ... fish diversity overshadows the absolute numbers of species. Antarctic notothenioid fishes, living at ...
Meeting Document : WG-EMM-09/13 : Author(s): J.T. Eastman and D.G. Ainley (USA)
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Krill biomass estimates for South Georgia, December and January 1996/97
conducted within two 80 x 100 km areas over the shelf-break to the north-east and north-west of South ... Georgia during December/January 1996/97. Netting suggested that the mean lengths of krill within the ... box-specific krill target strength (TS) values of-38.89 and-38.59 dB kg-1. Acoustic signals believed ... to be attributable to krill were identified on the basis of the difference between mean volume ...
Meeting Document : WG-EMM-97/48 : Author(s): Goss, C., Watkins, J.L., Brierley, A.S.
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Krill CPUE standardisation and comparison with acoustic data based on data collected from Chinese fishing vessels in Subarea 48.1
Abstract: The usability of CPUE data as Antarctic krill abundance index was a widely discussed ... than catch per day data. The veridical distribution and movement of krill could be important source of ... differences between CPUE and acoustic data. The uncertainties and biases of CPUE data implied that CPUE used ... to indicate the krill stock abundance should be very caution. However, the dynamics of CPUE could ...
Meeting Document : WG-EMM-17/41 : Author(s): Y. Ying, X. Wang, J. Zhu and X. Zhao
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Preliminary results from the International Synoptic Krill Survey in Area 48, 2019
presented. Of the six vessels that participated in the survey, this report provides methods and preliminary ... results from four (vessels from the Association of Responsible Krill harvesting companies (ARK), Norway ... , Ukraine, and the United Kingdom), covering 8719 n. miles of acoustic transects and occupying 149 sampling ... distribution maps of krill NASC (nautical area scattering coefficient). A preliminary spatial cluster analysis ...
Meeting Document : WG-EMM-2019/47 : Author(s): G. Macaulay, G. Skaret, T. Knutsen, O.A. Bergstad, B. Krafft, S. Fielding, S.G. Choi, S. Chung, K. Demianenko, V. Podhornyi, K. Vishnyakova, L. Pshenichnov, A. Chuklin, A. Shishman and M.J. Cox